EP0542674A1 - Procédé d'usinage à commande numérique d'une pièce sur une rectifieuse - Google Patents

Procédé d'usinage à commande numérique d'une pièce sur une rectifieuse Download PDF

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Publication number
EP0542674A1
EP0542674A1 EP92810792A EP92810792A EP0542674A1 EP 0542674 A1 EP0542674 A1 EP 0542674A1 EP 92810792 A EP92810792 A EP 92810792A EP 92810792 A EP92810792 A EP 92810792A EP 0542674 A1 EP0542674 A1 EP 0542674A1
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EP
European Patent Office
Prior art keywords
machine
grinding
head
coordinates
measuring
Prior art date
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Granted
Application number
EP92810792A
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German (de)
English (en)
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EP0542674B1 (fr
Inventor
Anton Ilek
Hugo Thurnherr
Emil Eugster
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
L Kellenberger and Co AG
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L Kellenberger and Co AG
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Publication of EP0542674A1 publication Critical patent/EP0542674A1/fr
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Program-control systems
    • G05B19/02—Program-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form
    • G05B19/401—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form characterised by control arrangements for measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes
    • G05B19/4015—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of program data in numerical form characterised by control arrangements for measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes going to a reference at the beginning of machine cycle, e.g. for calibration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B47/00—Drives or gearings; Equipment therefor
    • B24B47/22—Equipment for exact control of the position of the grinding tool or work at the start of the grinding operation

Definitions

  • the present invention relates to a method for numerically controllable machining of a workpiece on a grinding machine, which has a holder for the workpiece and a grinding head equipped with one or more grinding wheels, this grinding head being pivotably mounted on a tool slide and being displaceable together with the workpiece holder .
  • the machine carrying out this method has a spherical feeler which is pivotably attached to the side of the grinding head facing the workpiece.
  • the position of the swiveled-out button relative to the working surfaces of the grinding wheel is assumed to be known in this method and is indicated by distances in two mutually perpendicular directions.
  • a grinding machine has several parts that can be moved relative to one another.
  • the known method described presupposes that the mutual position of all machine parts which can be moved relative to one another is known and stored in the memories of the control device of the machine.
  • the storage of the above-mentioned mutual positions of the machine parts presupposes that the values corresponding to these positions have been learned.
  • the process in which these values are determined can be called the measurement of the machine.
  • the object of the present invention is to disclose a method which does not have the disadvantages mentioned.
  • the present case it is a positioning procedure for determining the relative position between a workpiece and a grinding wheel or the working edges thereof on a cylindrical grinding machine.
  • there is an internal calculation of the position changes of the grinding wheel so that the resulting position of the grinding wheel, after it has been pivoted, can be expressed and / or displayed at any time using the coordinates X and Z. Knowing the position of the grinding wheel or the working edges thereof within the coordinate system of the machine also makes it possible, for example, to carry out a compensation movement of the pivot axis of the grinding head in such a way that the relevant working edge of the grinding wheel is stationary during the pivoting movement of the grinding head.
  • FIG. 1 One of the grinding machines to which the present method can be applied is shown in plan view and schematically in FIG. 1.
  • This machine has a bed or a stand 1, which has an essentially T-shaped plan.
  • guide means 3 On the top of the beam part 2 of this T-shaped bed 1, guide means 3 are designed for a slide 4 which can be moved along this.
  • This carriage 4 is provided for receiving a workpiece 5 and therefore this is also referred to below as a workpiece carriage.
  • a table 6 is pivotally mounted on the workpiece carriage 4.
  • a clamping device 7 for the workpiece 5 is provided, which comprises a headstock 71 and a tailstock 72, the headstock 71 being pivotably mounted on the swivel table 6.
  • the headstock 71 contains a shaft 8 and a clamping head 9 for the workpiece 5 is attached to the free end of this shaft 8.
  • a grinding head 16 is pivotally or rotatably mounted on this handle part 12 of the stand 1.
  • This carriage 15 is also called a grinding carriage 15 designated.
  • a shaft 11 protrudes from at least one of the side walls of the housing of the grinding head 16, at the end of which a grinding wheel 10 is exchangeably fastened.
  • This attachment is advantageously carried out with the aid of a cone 17 at the end of the shaft 11 and a chuck 18 in the grinding wheel 10, which sits on the cone 17.
  • the disc 10 is fastened to the shaft 11 with the aid of a nut 19, which can be screwed onto an outlet section (not shown) of the cone 17.
  • a measuring probe 20 protrudes, which comprises a ball 21 and a spacer rod 22.
  • the ball 21 is fastened to the grinding head 16 via the spacer rod 22.
  • the dimensions of both the rod 22 and the ball 21 are known and they belong to the data given to the machine.
  • the center of the ball 21 of the probe 20 is denoted by V.
  • This center point V can also be regarded as a measuring point because the coordinates X and Z refer to it, which indicate the position of the probe head 21 in the coordinate system X, Z of the machine.
  • Points are provided on the machine, on the basis of which the computer program controlling the machining of the workpiece can orient itself while controlling the movement of the grinding head 10.
  • the so-called zero point M of the machine can be mentioned as the first of these points. In this type of grinding machine, this is located in the area of the workpiece carriage 4. In the illustrated case, the machine zero point M coincides with the pivot axis of the workpiece table 6 which is vertical, ie perpendicular to the plane of the sheet. This zero point M also contains the zero point of the machine's coordinate system.
  • the X axis of the coordinate system runs in the longitudinal direction of the stem part 12 of the T-shaped stand 1.
  • the Z axis of this coordinate system runs in the longitudinal direction of the beam part 2 of the T-shaped bed 1.
  • the Y axis runs vertically or perpendicular to Bed 1 and it coincides with the axis of the swivel table 6. In the present case, the Y axis passes through the machine zero point M.
  • the reference point Rf of the machine is located in an area of the bed 1, from which it is assumed that the head 16 will hardly get there during the machining of the workpiece 5, which, however, is caused by the Grinding head 16 can be started.
  • the reference point Rf is at a distance from the zero point M of the machine.
  • the reference point Rf can be defined or simulated with the aid of electromechanical means, for example limit switches.
  • This point F can also be referred to as a slide reference point.
  • the reference point Rf on the bed 1 is considered to have been approached by the grinding head 16 when the slide reference point F lies exactly above the reference point Rf.
  • Determining the position of point F is also made more difficult by the fact that there is no button or the like on the machine with the help of which the position of the axis of rotation F could be determined exactly, ie according to the required accuracy of machining by grinding. In principle, you could take a scale and measure the machine by hand. The determined values could then be entered into the machine in the usual way. Such a method would, however, lack the accuracy that is required for the required accuracy of the machining.
  • FIG. 2 essentially shows a section from FIG. 1, in which only those parts of the machine are shown which are required for measuring the position of the slide reference point or the axis F with respect to the zero point M. Only the zero point M of the machine bed 1 is shown in FIG. 2.
  • a measuring device 25 is provided, which comprises a base plate 26, this base plate 26 being attached to the workpiece slide 4.
  • the base plate 26 has a reference mark S, which is indicated as a cross. The center of the cross of this mark S is exactly assigned to the zero point M of the machine.
  • the measuring device 25 can also be set up at other points on the workpiece carriage 4.
  • a right-angled cutout 27 is made in one of the corner parts of the base plate 26 of the measuring device 25.
  • the respective leg 28 and 29 of this cutout 27 is a dial gauge 31 or 32 assigned in such a way that the measuring bolt 33 or 34 of the respective dial gauge 31 or 32 is at right angles to the angle leg 28 or 29 through which it passes.
  • the end faces of end plates 35 and 36 at the ends of the measuring bolts 33 and 34 thus also form a right angle between them and they can form stop faces for the ball 21 of the probe 20 attached to the machining head 16. If the ball 21 of the probe 20 is in the position shown in FIG.
  • the dial indicators 31 and 32 together with the distance thereof from the zero point M of the base plate 26 give the distance of the ball center point V from the zero point M in FIG X direction as XMV and in the Z direction as ZMV.
  • the distances of the axis F from the center of the ball V are indicated by XVF and ZVF, these distances being unchangeable because the probe is attached to the grinding head 16.
  • the position of the ball 21 relative to the measuring device 25 changes only a little, then only the distances delta X and delta Z indicated by the dial indicators 31 and 32 would change.
  • the entire measuring device 25 would have to be adjusted accordingly so that the position of the ball 21 can be determined.
  • the grinding head 16 can be pivoted about the shaft 30 or about its axis F with the aid of a corresponding drive (not shown), regardless of whether the exact position of the point F with respect to the zero point M is known or not .
  • the swivel axis F runs parallel to the axis Y of the coordinate system of the machine.
  • the distance R or R 'of the center of the sphere V from the pivot point F is unchangeable because the probe 20 is attached to the grinding head 16.
  • the size of this distance R or R ' is not yet exactly known from the point of view of the machine or the machine program, because the position of the point F of the machine is not known.
  • the measuring device is used to specify this data 25 positioned so that the reference mark S of the measuring device 25 is brought into register with the zero point M of the machine in the manner already described.
  • the probe head 21 is brought into abutment with the end plates 35 and 36 of the measuring device 25 and the position of the center of the sphere V is determined precisely with the help of the dial indicators 31 and 32 and based on the known dimensions of the sphere 21.
  • These values can be expressed as coordinates of the measuring point V in the measuring system of the machine and saved in the machine.
  • the probe 20 is attached to the grinding head 16, advantageously to its housing 23.
  • the measuring device 25 is arranged on the workpiece carriage 4 in such a way that the mark S on this measuring device 25 lies exactly above the zero point H of the machine.
  • the head 21 of the probe 20 is brought to rest on the end plates 35 and 36 of the measuring device 25 arranged in this way.
  • the probe head 21 is now in its initial or initial position and the coordinates of the measuring point V on the probe head 21 are stored in a control unit, which represents one of the components of the machine, on the basis of the data supplied by the measuring device 25.
  • the pivot axis of the grinding head 16 is now in its first position F and the coordinates of this position, which are only assumed or which resulted from a measurement of the machine using a scale, are also stored in the control unit. This data is stored so that it can be checked during the further course of this process and, if necessary, also specified.
  • the control unit which also contains a computer, then calculates where the measuring point V on the probe head 21 would or should be if the grinding head 16, which can be pivoted about the pivot axis 30 or about the center of rotation F, is pivoted by a predetermined angle. Because the grinding head 16 is pivoted about its shaft 30, it is known in advance that the path B along which the point V on the probe head 21 will move will have the shape of a segment of a circle. At this moment, however, the exact position of the turning center F with respect to the origin of the coordinate system X, Z of the machine is still unknown.
  • the coordinates of the calculated end or swivel position of the measuring point V are stored in the control unit.
  • the grinding head 16 is then pivoted about the predetermined angle around the shaft 30.
  • This angle beta can be 30 degrees, for example, and the pivoting movement can be carried out clockwise around the axis F or F '.
  • F in FIG. 1 denotes that position of the pivot axis 30 of the grinding head 16 which results from the method explained here. The same applies to the definition of the parameters or radius R and R 'and the paths B and B'.
  • the probe head 21 After the probe head 21 has reached its end or pivot position, it is checked whether there is a deviation between the actual and the previously calculated end or pivot position of the probe head 21. This can be determined in such a way that the workpiece slide 4 on which the measuring device 25 is arranged is displaced in the direction of the Z axis in that area of the machine where the probe head 21 is to be located according to the calculations mentioned.
  • the grinding head 16, which carries the probe 21, on the other hand, is displaced in the direction of the X-axis until the probe head 21 also comes into contact with the measuring device 25.
  • the measuring system of the machine for the direction of the Z axis indicates the actual Z coordinate of the point V in the fact head 21, possibly in combination with the relevant dial indicator 32 of the measuring device 25, this distance resulting from the path of the workpiece slide 4.
  • the value of this coordinate because it was determined by the machine's measuring system, can be stored in the machine, advantageously automatically.
  • the measuring system of the machine for the direction of the X axis allows, if necessary in combination with the relevant dial gauge 31 of the measuring device 25, to determine the actual X coordinate of point V in the taster head 2, this distance resulting from the displacement of the grinding head 16 to to stop the probe head 21 on the measuring pin 33 of the dial gauge 31.
  • the actual position of the center of the sphere V at the end of the pivoting movement will deviate from the calculated or assumed position thereof due to the inaccuracy of the position of the pivot axis F 'and the inaccuracy of the size of radius R'.
  • the size of this deviation can be precisely determined with the help of dial gauges 31 and 32 on measuring device 25.
  • the details of dial indicators 31 and 32 can be entered in the machine memory as distances Delta X and Delta Z.
  • the coordinates of the original starting position of the center of the sphere V are now known, the assumed end position of the same after the pivoting of the sphere 21 by the angle beta of 30 degrees and the real end position of the center of the sphere V after the aforementioned pivoting of the sphere 21.
  • the coordinates these three points are stored in the machine.
  • the machine can determine the deviation of the assumed position of the center of rotation F of the grinding head 16 from the real position F 'of the same in a mathematical method known per se, for example using a circular regression.
  • the probe head 21 is pivoted back from its end position into its initial position.
  • the shaft 30 of the grinding head 16 is displaced relative to the machine bed 1 in such a way that the center of rotation F 'is in the position determined by the correction method.
  • the shaft 30 of the grinding head 16 is thus displaced a short distance in one direction, so that the pivot axis 30 of the grinding head 16 is brought into a different position F '.
  • a new, assumed end position of the ball 21 at the end of the mentioned swivel path B 'of the grinding head 16 is calculated.
  • This angle can be the same as the angle which was selected for the aforementioned swiveling movement of the grinding head 16 is.
  • the grinding head 16 is now pivoted by the predetermined angle and it is checked in the manner mentioned above whether there is a deviation between the actual and the calculated pivoting position of the probe head 21.
  • the machine compares the size of the deviations mentioned in successive measuring cycles. If the size of the deviations increases, then the pivot shaft 30 of the grinding head 16 has been displaced in the wrong direction. In such a case, the direction of displacement of the pivot shaft 30 of the grinding head 16 is changed. The swivel shaft 30 is shifted in the changed direction and a further measurement run is carried out. At the end of this measurement run, the size of the deviation just found is compared with the deviation which was determined in the measurement run carried out previously. The position of the pivot shaft 30 is changed accordingly and a further measuring cycle is carried out. The measuring runs are carried out with the machine until there is no deviation between the calculated and the actual end or swivel position of the probe head 21. In this case, the coordinates of the pivot axis F of the grinding head 16 are stored so that they can be used later.
  • the assumed position of the ball 21 corresponds to the real position of the same. This results from the coincidence of the coordinates of the measuring point V on the ball 21 in the starting and in the end position of the pivoting movement. From this moment on, the correct and exact coordinates of the axis of rotation F have also been determined in the coordinate system of the machine and can be stored in the machine. consequently, the distance between the axis of rotation F and the zero point M of the machine is now known or at least can be determined precisely at any time because the position of the machine zero point M is given by the construction of the machine.
  • the already mentioned circular section-shaped movement path B of the measuring point V can be approximated by a few points lying on this path B.
  • the coordinates of these points can be measured, for example with the aid of the measuring device 25 attached to the workpiece holder.
  • These points can be used to determine the coordinates of the center of rotation F of the grinding head 16.
  • the machine starts from the coordinates of the points of that trajectory B of the probe head 21 at which there is no deviation between the calculated and the actual end position of the probe head 21.
  • the radius R of that circular arc which the path of motion B forms is determined. This is done using known mathematical methods.
  • the determination of the coordinates of the reference point Rf can be explained using FIG. 3.
  • the position of the axis of rotation F of the grinding head 16 is already known and the coordinates of this position are stored in the machine.
  • the grinding head 16 is moved until the axis of rotation thereof or the point F corresponding to it is brought into register with the reference point Rf on the machine bed 1. Since the measuring system of the machine indicates the position of the axis of rotation F at every moment, the reference point Rf which is congruent with the point F has the same coordinates as the axis of rotation F.
  • the coordinates of the point F are XMR and ZMR and because of the overlap of the points F and Rf mentioned, these are also the coordinates of the reference point Rf.
  • the angular position of the point Rf with respect to the zero point M in the coordinate system of the machine is determined in that the grinding head 16 from the zero point M into the reference point Rf first in one direction, for example in the x direction, and then in the other direction, ie in the z direction.
  • the machine's measurement system provides information about the angle of the vector that connects the points M and Rf.
  • the machine or the masystem thereof therefore also serves as a measuring device.
  • this distance R can be expressed using the coordinates XVF and ZVF. From these coordinates, coordinates WegX and WegZ can be determined for the distance that lies between the measuring point V and the center of the measuring space in the measuring device 25. It is assumed here that the distances between the machine zero point M and the axes of the measuring bolts 33 and 34 are given by the construction of the measuring device 25 and are therefore known.
  • FIG. 4 shows a detail from FIG. 1, in which only those parts of the machine are shown that are required for measuring the position of a tool clamping point N with respect to the axis of rotation F of the grinding head 16.
  • One of these shafts 11 and 111 can, for example, carry a tool for external cylindrical grinding and the other shaft can carry a tool for internal cylindrical grinding (not shown).
  • the point N which is called the tool clamping point becomes.
  • the head 16 has more than one shaft 11, 111 etc., then the names of these waves are indexed, ie they are designated N1, N2 etc.
  • a probe 40 is used, which likewise has a ball 41 and a spacer rod 42, as has been explained in connection with the probe 20 already described.
  • the spacer rod 42 in the present push button 40 is designed so that it can be inserted into a bore in the cone 17 of the shaft 11.
  • the dimensions of the rod 42 and the bore in the cone 17 are selected such that the distance between the tool clamping point N2 and the measuring point W2 in the ball 41 is known exactly.
  • Delta X and Delta Z are zero because the dial gauges 31 and 32 of this device 25 are set to zero.
  • the position of the pivot axis F of the grinding head 16 is, as discussed, already known.
  • the distance between the tool clamping point N2 and the axis of rotation F can thus be identified by the coordinates XFN and ZFN, as can be seen from FIG. 4. If the grinding head 16 has several shafts, then each one with the Provide probe 40, after which the measuring device 25 is approached, etc. The coordinates of the corresponding points N are then determined and stored.
  • Fig. 5 shows those points of the machine whose positions are known at the end of the measurement of the machine. These are the reference point F on the grinding slide 15 and on the grinding head 16, the measuring point V on the probe 20, the reference point Rf and the tool clamping points N1, N2 etc.
  • the grinding wheel 10 is measured in this method. This takes place in two steps, the first step being able to be described on the basis of FIG. 6 and the second step on the basis of FIG. 7.
  • a measuring cube 43 or another device that can be used for the same purpose is attached to the workpiece slide 4. This measuring cube 43 is aligned in such a way that its walls run parallel to the X and Z axes.
  • the measuring probe 20 attached to the grinding head 16
  • first a first wall of the measuring cube 43 and then a second wall of the same is scanned, which is perpendicular to the first-mentioned wall of the measuring cube 43. Since the distance R between F and V and the diameter of the ball 21 are known exactly, the position of the center W of the measuring cube 43 of precisely known dimensions can be determined precisely and then stored.
  • the position of the processing edge P of the grinding wheel 10 (FIG. 7) is then determined.
  • the distance between the axis WA of the shaft 11 for the grinding wheel 10 and the point F is already known and this is indicated by ZFN, as has been explained in connection with FIG. 4.
  • the distance XNP between the tool clamping point N on the shaft 11 and the machining edge P of the grinding wheel 10 must also be determined. Since the position of the upper horizontal wall of the cube 43 running parallel to the Z axis is known, it is sufficient to place the grinding wheel 10 on this cube wall.
  • the distance XNP can be determined from the distance which the axis F has traveled in the X direction during this feed. This is then also saved.
  • the distance ZNP must also be determined, which indicates the position of the processing edge P of the grinding wheel 10 in the Z direction relative to the clamping point N thereof.
  • the positions of the side walls of the measuring cube 43 in the Z direction are also known from one of the measurements described above. To determine ZNP, one of the side walls of the measuring cube 43 is approached with that end wall of the grinding wheel 10 which runs parallel to the X axis and whose point of intersection with the circumferential surface of the wheel 10 defines the point P. Since the distance between F and N and the position of the cube side wall are already known, ZNP can be determined from the size of the advance of point F, which was required to approach the side wall of the cube.
  • a dressing diamond 44 is normally used to dress the grinding wheel 10. So that the dressing of the grinding wheel 10 can also be carried out automatically by the machine, the position of the dressing diamond 44 must also be known exactly.
  • the diamond 44 is arranged at a somewhat remote location on the workpiece slide 4 and in the vicinity of the measuring cube 43. Since the position of the working edge P of the grinding wheel 10 is already known, it is sufficient to approach the diamond 44 with the working edge P of the grinding wheel 10 on two walls thereof and to save those coordinates of the pivot axis F which the working edge P has.
  • the position of the zero point A must be known.
  • the determination of this zero point A can be explained with reference to FIG. 9.
  • the distance between the pivot axis F and the working edge P of the grinding wheel 10 is known from the previous method step.
  • the workpiece 5 is clamped between the workpiece holder 71 and the tailstock 72. In the case shown, the workpiece 5 has a shoulder 45.
  • the zero point A of the workpiece 5 is located on the same end wall on which the workpiece holder 71 engages.
  • the diameter of the thicker and the thinner section of the workpiece 5 and the length of the workpiece sections mentioned is given by the particular type of workpiece 5. These dimensions are referred to as MASS in FIG. 9.
  • the distance XMA in the X direction between the axis EI, which passes through the workpiece attachment points 48 and 49, and the machine zero point M is given by the design of the machine and is therefore precisely known.
  • the DIMENSIONS of the workpiece 5 are also precisely known. Only the position of workpiece zero A is not exactly known, i.e. of the point 48, in the Z direction, because the clamping means 48 and 49 are displaceable in the Z direction.
  • the working edge P of the grinding wheel 10 is inserted into the interior of the shoulder 45.
  • the leg of the shoulder 45 which extends in the radial direction, is ground by the disk 10 and then the position of the working edge P is determined by the measuring system of the machine. Taking into account the known length of the thicker section of the workpiece 5 and the known distance between the working edge P and the zero point M of the machine, the result is Distance ZMA between the zero point M of the machine and the zero point A of the workpiece 5 in the Z direction.
  • the machine bed 1 is indicated in FIG. 10 by the zero point M of the machine.
  • the workpiece 5 is indicated by the zero point A and by a point WE thereof at which the grinding wheel 10 is intended to act at this point in order to machine the workpiece. From the components determined as described above, the vector MF between the machine zero point M and the slide reference point F, the vector MP between the machine zero point M and the working edge P of the grinding wheel 10 and the vector MA between the machine zero point M and the zero point A of the workpiece.
  • the vector MWE shown in FIG. 10 results from the specification that this point WE of the workpiece is to be treated. Before this point WE of the workpiece is treated, the working edge P of the grinding wheel 10 is generally at a distance from this workpiece point WE.
  • the program must determine the vector MWE from the position of the workpiece location WE and the edge P of the grinding wheel 10 in the machine's measuring system. Furthermore, the program has to determine the components of this vector MWE and the drives of the machine are then supplied with corresponding control signals which enable the working edge P of the grinding wheel 10 to be brought up to the workpiece location WE.

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  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
EP92810792A 1991-10-17 1992-10-15 Procédé d'usinage à commande numérique d'une pièce sur une rectifieuse Expired - Lifetime EP0542674B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH3033/91A CH684250A5 (de) 1991-10-17 1991-10-17 Verfahren zur numerisch steuerbaren Bearbeitung eines Werkstückes an einer Schleifmaschine.
CH3033/91 1991-10-17
US07/961,818 US5335454A (en) 1991-10-17 1992-10-19 Procedure for the numerical control of a workpiece on a grinding machine

Publications (2)

Publication Number Publication Date
EP0542674A1 true EP0542674A1 (fr) 1993-05-19
EP0542674B1 EP0542674B1 (fr) 1996-05-08

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EP (1) EP0542674B1 (fr)
CH (1) CH684250A5 (fr)

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DE69624577T2 (de) * 1995-08-31 2003-07-03 The Gleason Works, Rochester Verfahren und vorrichtung zum ausrichten von messerköpfen
USD385662S (en) * 1996-08-16 1997-10-28 Paglucci Jr Anthony Thomas Ball game helmet
CH695260A5 (de) * 2001-08-22 2006-02-28 Studer Ag Fritz Rundtakt-Feinbearbeitungsmaschine.
JP3910482B2 (ja) * 2002-04-26 2007-04-25 Ｔｈｋ株式会社 数値制御工作機械における加工誤差補正方法及びこれを用いた研削盤
GB2408224B (en) * 2003-11-21 2005-11-09 Unova Uk Ltd Improvements in and relating to grinding machines
TWI388397B (zh) * 2004-02-25 2013-03-11 Studer Ag Fritz 用於工作件加工的加工機
EP1747846A1 (fr) * 2005-07-25 2007-01-31 Rollomatic S.A. Procédé et dispositif de mesure de la géometrie d'une arête de coupe à chanfreiner
JP5428740B2 (ja) * 2009-10-19 2014-02-26 株式会社ジェイテクト 複合研削盤
CN102744666B (zh) * 2012-07-03 2014-11-19 上海交通大学 一种密封环内球面数控精密磨削装置与磨削方法
CN103921120B (zh) * 2014-04-09 2016-07-20 中山建德工业有限公司 一种车铣钻攻综合数控设备

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GB2059825A (en) * 1979-10-10 1981-04-29 Traub Gmbh Determining tool tip position
US4709509A (en) * 1985-10-17 1987-12-01 Toyoda Koki Kabushiki Kaisha Numerically controlled grinding machine
US4704825A (en) * 1986-09-02 1987-11-10 Moore Special Tool Co., Inc. Method for automatically sizing a ground surface on a workpiece
DE3736463A1 (de) * 1987-10-28 1989-05-11 Ziersch & Baltrusch Werkzeugma Schleifmaschine und mit dieser durchgefuehrtes verfahren
US5027562A (en) * 1987-11-27 1991-07-02 Toyoda Koki Kabushiki Kaisha Numerically controlled grinding machine for grinding a tapered surface of a workpiece
EP0416258A1 (fr) * 1989-07-21 1991-03-13 Toyoda Koki Kabushiki Kaisha Méthode pour détecter les coordonnées de position du point à meuler d'une machine à meuler et équipement rattaché

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EP0542674B1 (fr) 1996-05-08
US5335454A (en) 1994-08-09
CH684250A5 (de) 1994-08-15

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